Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A novel door peep hole is characterized by comprising a concave lens 1, a convex lens 2, a reflecting mirror 3 and a rotary barrel frame 4. The convex lens 2 is an ocular lens, the concave lens 1 is an objective lens, the reflecting mirror 3 is mounted in the middle of the rotary barrel frame 4, an included angle is 90 degrees, an object is refracted to the reflecting mirror 3 through the concave lens 1, and then is reflected to the convex lens 2, and then a host in a house can see action of persons out of a door.
A novel door peep hole is characterized by comprising a concave lens 1, a convex lens 2, a reflecting mirror 3 and a rotary barrel frame 4. The convex lens 2 is an ocular lens, the concave lens 1 is an objective lens, the reflecting mirror 3 is mounted in the middle of the rotary barrel frame 4, an included angle is 90 degrees, an object is refracted to the reflecting mirror 3 through the concave lens 1, and then is reflected to the convex lens 2, and then a host in a house can see action of persons out of a door.
Novel door peep hole
DU PENGFEI (Autor:in)
03.02.2016
Patent
Elektronische Ressource
Englisch
IPC:
E06B
Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore
,
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES